Triple5LX Hook

Multi-brand fleet maintenance services

Triple5LX Hook Release Mechanism

Survival Systems International design, manufacture and install the inherently safe Triple5LX Hook Release Mechanism worldwide.

For further detail please contact us below.

Triple5LX Hook Release Mechanism

The SSI hook design principle has evolved within the Oil and Gas industry due to 50+ years of use within our own SSI Capsules. Due to the increased concerns of Twinfall hook safety SSI has been able to adopt the same inherently safe working principles, bringing Single Fall Lifeboat Safety to the Twinfall user.

Triple 5 lifeboat hook

The Load Locks the Hook

The Triple5LX Release System is engineered with a lift over centre design as the central concept. Lift Over Center is defined as the load point of the hook being directly above the centre of the pivot point of the hook. Such a design ensures that the weight of the boat works to keep the hooks closed when it is suspended above the water.

Load Locks the Hooks

Safety without Manual Pin

There is a desire to have additional locks (pins) in any hook body for added safety. Pinning each hook however creates danger, if these pins are left in during an emergency. The Triple5LX has a built-in Internal secondary safety system in each hook that acts as a pin but can of be disengaged from the helmsman’s position.

Safety without Manual Pin

Eliminating the Hydrostat

Triple5LX begins with a fundamentally stable system resulting in no need for a hydrostat system. This safer hook system has less operational risks and less maintenance concerns. 


A Deliberate Separate Action
for On-load Release

Traditional lifeboat hooks use the same handle for an off-load release and on-load release. For safety SSI intentionally designed a distinctly different method for on-load release. A Triple5LX on-load release requires deliberate separate steps using a secondary handle.

On load Release

Reset Hooks from the Helmsman’s Position

The Triple5LX Hook System uses high strength, maximum efficiency push / pull cables connected directly to the hooks. This allows the hooks to be RESET as well as opened from the safety of the helmsman’s position.

lifeboat Helmsman

Are your lifeboat hooks compliant with new regulations?

Keep your operations running smoothly. Get in touch today to make sure your hooks are up-to-date with new regulations.

Why work with SSI?

With over 50 year experience in the lifeboat safety industry, your company,
crew and lifeboats are in the safest hands.

50+ Years Experience

SSI have the safest lifeboat track record in the life saving industry with over 50 years’ experience of focusing 100% on servicing lifeboats.

Worldwide Services

SSI can manage your entire lifeboat fleet offering a full range of lifeboat services worldwide from inspections and repairs to training.

Lower Costs

SSI lifeboats offer the longest lifespan of any lifeboat with significantly reduced maintenance needs and lower operational costs.

Patented Hook Design

All SSI lifeboats work with our patented hook technology. 
Our Triple5LX hook is the safest hook in the industry.

ISO Compliant

At SSI we pride ourselves on being the frontrunner in the development of international ISO safety standards for lifeboat servicing and training.

Do you have lifeboat Concerns?

ssi are here to HELP

Q. Are your Operational costs too high?

Q. Concerns over Lifeboat compliance?

Q. At risk of down manning or vessel detention?

Q. Are your hooks safe and compliant?

If you are answering


to these questions.

Enquiry Form

Please fill in the enquiry form below and we will reply with 48 hours.

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please add all pertinent information to your query, thank you.